Water brush pen



FIG. 1 is a perspective view of a water brush pen showing my new design;

FIG. 2 is another perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is a perspective view of the water brush pen where a pen cover is connected with a pen body; and,

FIG. 10 is an enlarged view of portion 10 shown in FIG. 1.

The broken lines in the drawings depict portions of the water brush pen that form no part of the claimed design. 

CLAIM The ornamental design for a water brush pen, as shown and described. 